import time


class DataFeed(object):
    @property
    def millisecond(self):
        return str(int(time.time() * 1000))

    def get_detail(self):
        raise NotImplemented

    def get_history(self, symbol, interval, start, end, **kwargs):
        raise NotImplemented

    def get_ticker(self, symbol):
        raise NotImplemented


__all__ = [DataFeed]
